mcelroy



(No Model.)

2 Sheets-Sheet; 1. J. F. McELROY.

VALVE FOR GAR HEATING SYSTEMS.

Patented July 20, 1897.

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J. F. MOELROY.

VALVE FOR CAR HEATING SY$TEMS.

No. 586,616. Patented JuIy'ZO, 1897.

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UNiTnn STATES PATENT OFFICE.

JAMES F. MCELROY, OF ALBANY, NEIV YORK, ASSIGNOR TO THE CONSOLI- DATED CAR-IIEATING COMPANY, OF SAME PLACE.

VALVE FOR CAR-HEATING SYSTEMS.

SPECIFICATION forming part Of Letters Patent No. 586,616, dated July 20, 1897. Application filed August 6, 1896. Serial No. 601,890. (No model.)

To all whom, it may concern:

Be it known that I, JAMES F. MCELROY, a citizen of the United States, residing in the city and county of Albany, State of New York,

5 have invented a new and useful Improvement in Valves for Car-Heating Systems, of which the following is a specification.

My invention relates to improvements in mechanism for opening and closing the trainpipe of a car-heating system at the end of the car; and the object of my invention is to pro vide a valve which may be placed on the end of the train-pipe of a car-heating system at the end of the car and so constructed that the hose-coupling may be attached thereto and the valve operated from the side of the car without the necessity of reaching or of passing between the cars. I attain these objects by means of the mechanism illustrated a in the accompanying drawings, in which- Figure 1 is an elevation of the end of a car provided with my invention. Fig. 2 is an elevation. Fig. 3 is a section along the lines 1 1 on Fig. 2. Fig. l is a plan of the disk M.

; Fig. 5 is a view of the disk N. Fig. 6 is a view of the nut 0.

Similar letters refer to similar parts throu ghout the several views.

111 car-heating systems in which steam is the medium used it is often difficult to heat the last car on the train because of the escape of steam from the end of the car through the train-pipe. IVhen valves are placed in the pipe at the ends of the car and it is deemed desirable to attach other cars to the train, because of the location of said valves it is extremely difficult and often dangerous to make the coupling, it necessitating going between the cars. When no valves are used, the escape of steam and water of condensation interferes with the heating of the train and injures the hose-pipe used in coupling. It is to avoid these objections that I have provided this invention.

I construct the valvc-cylinder A, having an orifice for the entrance of the end of the train pipe B, to which the valve-cylinder is secured. The valve-chamber A is also provided with an orifice, to which is secured one end of the coupling-hose C, the valve-chamber being of such form that the orifices are in such positions therein that the train-pipe may be connected with the valve-chamber on one side and the hose-pipe connected therewith on the opposite side and at an angle to the diameter of the valve as will provide for the adjustment of the hose-coup1ing in the position most convenient.

Vithin the valve-chamber A, I arrange a valve-disk secured to the valve-stem D,which 6o valve-stem is provided with suitable threads d, engaging with threads E in the projection F of the valve. I provide an opening 6, connecting the enlarged space f in the projection F with the valve-cylinder to allow for the escape of water from said space f. At the end of the stem D, I providea suitable hand-wheel G, by the operation of which the valve-disk may be brought in contact with its seat H or removed therefrom, as desired.

I preferably construct the valve-disk of a series of pieces secured to the end of the stem D, the disk M threaded to receive the thimble n, and the disk N recessed in its lower surface to retain the gasket P, the disk N also having the threaded projection 19, upon which is secured the nut O, holding the gasket P in position in the recesses in the disk N. Through the seat H, I drill a hole It to allow the escape of steam or water in minute quanti- 8o ties.

As thus arranged the train-pipe may be practically closed at the end of the car, retaining the pressure of steam in the car. IVhen the coupling has been made with the hose-pipe of an adjoining car, the steam may be turned on by opening the valve without going between the cars and without the danger of being scalded by the escape of hot water of condensation or steam.

I claim- 1. In a car-heating system, a valve-casing provided with two ports, with one of which the train-pipe communicates, the other arranged to communicate with a hose-connecting pipe, a valve in said casing adapted to regulate the passage of the contents of the train-pipe therethrough, a valve-stem, said valve-stem arranged and adapted to intermesh with threads in the valve-casing, an en- 10o larged opening in said casing having means for allowing the water in said enlarged openpassage of the contents of the train-pipe therethrough, a valve-stem extending to the side of the car provided at its end with a handwheel, said valve-stern threaded and adapted to intermesh with threads in a projection on the valve-casing, an enlarged opening in said projection having means for allowing the water in said enlarged opening to escape into the valve-chamber,a valve-seat provided with a small opening allowing for a minute dischargefrom the train-pipe intothe hose-pipe when the valve is closed, substantially as described.

JAHES F. MOELROY. WVitnesses:

CHAS. B. MITCHELL, FREDERICK W. CAMERON. 

